echoMode : TextInput.Password will end up showing your password anyway on the N900 due to autocomplete

On the N900 autocomplete still works in TextInput fields even in password mode. So lets say your password is 'notverysecure'. The second time you enter your password on pressing 'n' autocomplete then shows you the rest of the password.

We should disable the autocomplete here. I would like the option to disable it everywhere, but that is a separate issue.